Got a Friday–Saturday swap of 18 IGUs at 415 Main, with two 2-person crews, one 60’ boom, and a 6:30–9:30 crane window; what’s your go-to split to keep set/check/cap moving without idle time? I’m leaning A/B leapfrog on bays 1–3 while traffic control cycles, but I don’t want sealant cure or the 8:15 glass drop to jam the line — any proven cadence?
I’d run a 2‑bay stagger with a 25‑minute lap: Crew A rides the 60’ to set N/N+1 while the crane’s hot, Crew B trails on N‑2 to check/cap only after the blue‑tape time tag hits 20–25, then hand the boom to B around 8:50 for a quick QC/shim sweep before the last picks. Pre‑stage the 8:15 drop to a rolling A‑frame at bays 2–3 so the crane clears your approach — “timestamp the sill” per lite — and @RiggingMike’s baton‑relay tweak keeps traffic control from pinning you; want me to send the tape template?
I run it ‘no empty lift’ by making the boom glass-only and pre-staging a rolling A-frame two bays ahead during the 6:30–9:30 window so the 8:15 drop feeds A continuously while B trails on ladders for check/cap after an 18–20 minute tag. Do you have room to park an A-frame without jamming traffic control? If sidewalk space is tight, switch to a single-bay handoff at 2 and keep the same cadence.
Lock the boom to sets during ‘6:30–9:30’; B preps N–2. Stage two A-frames for the 8:15 drop?
With one 60’ boom and that short crane slot, I treat the morning as glass-only: B rigs and stages while A sets N/N+1, and every lite gets a paint‑pen timestamp so B doesn’t touch sealant until the tag flips past “skin.” The small win is a hard “basket swap” at each traffic‑control cycle — don’t land the boom, just trade riders at the fence — keeps zero‑idle without fighting the delivery timing. If temps are cool, bump the cap trail to three bays back; otherwise your “A/B leapfrog” works fine. Do you have a dedicated spotter just calling lane flips so the operator never waits?